AP NewsBreak: FBI says Alaska man enjoyed killing

This undated photo provided by the FBI shows Israel Keyes. Keyes committed suicide in an Alaska jailhouse Sunday, leaving behind an incomplete picture of a loner who traveled the country for more than a decade, picking victims at random and methodically killing them. (AP Photo/FBI)
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This undated photo provided by the FBI shows Israel Keyes. Keyes committed suicide in an Alaska jailhouse Sunday, leaving behind an incomplete picture of a loner who traveled the country for more than a decade, picking victims at random and methodically killing them. (AP Photo/FBI)
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During a news conference, police show surveillance video of Samantha Koenig, 18, making a cup of Americano coffee for a customer who shortly after abducted her Feb. 1, 2012, in Anchorage, Alaska. Police on Tuesday, Dec. 4, 2012, released the surveillance camera footage from the February abduction at the Common Grounds expresso stand in Anchorage. The release came two days after her confessed killer, Israel Keyes, was found dead in his Anchorage jail cell, apparently by suicide. (AP Photo/Mark Thiessen)— AP

During a news conference, police show surveillance video of Samantha Koenig, 18, making a cup of Americano coffee for a customer who shortly after abducted her Feb. 1, 2012, in Anchorage, Alaska. Police on Tuesday, Dec. 4, 2012, released the surveillance camera footage from the February abduction at the Common Grounds expresso stand in Anchorage. The release came two days after her confessed killer, Israel Keyes, was found dead in his Anchorage jail cell, apparently by suicide. (AP Photo/Mark Thiessen)
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This undated photo provided by the FBI shows a silencer found in a bucket discovered at a Parishville, N.Y. reservoir after a man jailed in Alaska admitted to a series of killings, including an Anchorage barista and a couple from Vermont. (AP Photo/FBI)— AP

This undated photo provided by the FBI shows a silencer found in a bucket discovered at a Parishville, N.Y. reservoir after a man jailed in Alaska admitted to a series of killings, including an Anchorage barista and a couple from Vermont. (AP Photo/FBI)
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This undated photo provided by the FBI shows a shovel found in Eagle River, Alaska, just north of Anchorage. The FBI says confessed Alaska serial killer Israel Keyes, who targeted people across the country, told authorities he planned to strike again in the state if he had gotten away with the murder of an 18-year-old Anchorage barista. (AP Photo/FBI)— AP

This undated photo provided by the FBI shows a shovel found in Eagle River, Alaska, just north of Anchorage. The FBI says confessed Alaska serial killer Israel Keyes, who targeted people across the country, told authorities he planned to strike again in the state if he had gotten away with the murder of an 18-year-old Anchorage barista. (AP Photo/FBI)
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FILE - In this undated file photo provided by the Essex, Vt., police, Bill and Lorraine Currier are seen. Investigators say Israel Keyes, found dead Sunday, Dec. 2, of an apparent suicide in an Anchorage, Alaska jail, was not only suspected of killing Anchorage barista Samantha Koenig but may be linked to seven other possible slayings around the country, including the Curriers, of Essex, Vt.. The bodies of the Curriers have never been found. They were last seen leaving their jobs on June 8, 2011. Anchorage police chief Mark Mew said Keyes confessed to killing Koenig, as well as killing Bill and Lorraine Currier of Essex, Vt. Keyes, 34, also indicated he killed four others in Washington state and one person in New York state, but didn't give the victims' names, authorities said. (AP Photo/Essex police, File)— AP

FILE - In this undated file photo provided by the Essex, Vt., police, Bill and Lorraine Currier are seen. Investigators say Israel Keyes, found dead Sunday, Dec. 2, of an apparent suicide in an Anchorage, Alaska jail, was not only suspected of killing Anchorage barista Samantha Koenig but may be linked to seven other possible slayings around the country, including the Curriers, of Essex, Vt.. The bodies of the Curriers have never been found. They were last seen leaving their jobs on June 8, 2011. Anchorage police chief Mark Mew said Keyes confessed to killing Koenig, as well as killing Bill and Lorraine Currier of Essex, Vt. Keyes, 34, also indicated he killed four others in Washington state and one person in New York state, but didn't give the victims' names, authorities said. (AP Photo/Essex police, File)
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FILE - In this undated file photo provided by the Anchorage Police Department shows Anchorage, Alaska, barrista, Samantha Koenig, 18, is pictured. Investigators say Israel Keyes, found dead Sunday, Dec. 2, of an apparent suicide in an Anchorage, Alaska jail, was not only suspected of killing Koenig but may be linked to seven other possible slayings around the country, including the Curriers, of Essex, Vt.. The bodies of the Curriers have never been found. They were last seen leaving their jobs on June 8, 2011. Anchorage police chief Mark Mew said Keyes confessed to killing Koenig, as well as killing Bill and Lorraine Currier. Keyes, 34, also indicated he killed four others in Washington state and one person in New York state, but didn't give the victims' names, authorities said. (AP Photo/Anchorage Police Department)— AP

FILE - In this undated file photo provided by the Anchorage Police Department shows Anchorage, Alaska, barrista, Samantha Koenig, 18, is pictured. Investigators say Israel Keyes, found dead Sunday, Dec. 2, of an apparent suicide in an Anchorage, Alaska jail, was not only suspected of killing Koenig but may be linked to seven other possible slayings around the country, including the Curriers, of Essex, Vt.. The bodies of the Curriers have never been found. They were last seen leaving their jobs on June 8, 2011. Anchorage police chief Mark Mew said Keyes confessed to killing Koenig, as well as killing Bill and Lorraine Currier. Keyes, 34, also indicated he killed four others in Washington state and one person in New York state, but didn't give the victims' names, authorities said. (AP Photo/Anchorage Police Department)
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This undated photo provided by the FBI shows bottles of Drano found inside a plastic bag in Eagle River, Alaska, just north of Anchorage. The FBI says confessed Alaska serial killer Israel Keyes, who targeted people across the country, told authorities he planned to strike again in the state if he had gotten away with the murder of an 18-year-old Anchorage barista. (AP Photo/FBI)— AP

This undated photo provided by the FBI shows bottles of Drano found inside a plastic bag in Eagle River, Alaska, just north of Anchorage. The FBI says confessed Alaska serial killer Israel Keyes, who targeted people across the country, told authorities he planned to strike again in the state if he had gotten away with the murder of an 18-year-old Anchorage barista. (AP Photo/FBI)
/ AP

This undated photo provided by the FBI shows a Home Depot bucket containing gun parts, ammunition and other items discovered at a Parishville, N.Y. reservoir after a man jailed in Alaska admitted to a series of killings, including an Anchorage barista and a couple from Vermont. (AP Photo/FBI)— AP

This undated photo provided by the FBI shows a Home Depot bucket containing gun parts, ammunition and other items discovered at a Parishville, N.Y. reservoir after a man jailed in Alaska admitted to a series of killings, including an Anchorage barista and a couple from Vermont. (AP Photo/FBI)
/ AP

ANCHORAGE, Alaska 
Authorities deduced from hours of interviews with an Alaska serial killer that he may have murdered close to a dozen people, and that he killed for pleasure and was only conflicted about how his notoriety would affect the ones he loved.

Israel Keyes confessed to killing eight people before he committed suicide last weekend in an Anchorage jail, but FBI and Anchorage Police Department investigators said Friday they think he may have had up to three additional victims.

"Based on some of the things he told us, and some of the conversations we had with him, we believe the number is less than 12," FBI Special Agent Jolene Goeden said. "We don't know for sure. He's the only one who could have ultimately answered that."

Keyes slit his wrist and strangled himself with bedding Sunday at the Anchorage Correctional Facility. He was facing federal murder charges in the kidnapping and death of 18-year-old Samantha Koenig, who was abducted from an Anchorage coffee stand Feb. 1.

Goeden and Anchorage Police officer Jeff Bell conducted up to 40 hours of interviews with Keyes after his March arrest in Texas. During that time, Keyes confessed to killing Koenig, along with Bill and Lorraine Currier in Vermont, and five other people - although details for those victims were scarce.

The interviews also revealed Keyes' motivation, which was simple, Goeden and Bell told The Associated Press.

"He enjoyed it. He liked what he was doing," Goeden said. "He talked about getting a rush out of it, the adrenalin, the excitement out of it."

Keyes also liked seeing coverage of his crimes in the media and he appeared to enjoy talking about some of the killings with investigators, Goeden and Bell said.

Keyes' crimes started small with burglaries and thefts - until the urge escalated to murder.

Bell said Keyes told them the first violent crime he committed was a sexual assault in Oregon, in which he let the victim go.

"He planned on killing her but didn't," Bell said.

Keyes said the rape occurred sometime between 1996 and 1998 along the Deshutes River near Maupin, Ore., after he got the girl away from her friends. The girl was between the ages of 14 and 18, and would be in her late 20s or 30s now. No police reports were filed, and the FBI is seeking more information the crime.

Of the five other murders Keyes confessed to, four were in Washington state and one occurred on the East Coast, with the body disposed of in New York.

In the case of the Curriers, authorities say Keyes flew from Alaska to Chicago on June 2, 2011, rented a car and drove almost 1,000 miles to Essex, Vt.

There he carried out a "blitz" style attack on the Curriers' home, bound the couple and took them to an abounded house. Bill Currier was shot, and his wife was sexually assaulted and strangled.

Keyes immediately returned to Alaska, and followed the case on his computer by monitoring Vermont media. The couple's bodies were never found after the house was demolished and taken to a landfill.